1
JEE Main 2021 (Online) 26th August Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Which one of the following phenols does not give colour when condensed with phthalic anhydride in presence of conc. H2SO4 ?
A
JEE Main 2021 (Online) 26th August Evening Shift Chemistry - Alcohols, Phenols and Ethers Question 75 English Option 1
B
JEE Main 2021 (Online) 26th August Evening Shift Chemistry - Alcohols, Phenols and Ethers Question 75 English Option 2
C
JEE Main 2021 (Online) 26th August Evening Shift Chemistry - Alcohols, Phenols and Ethers Question 75 English Option 3
D
JEE Main 2021 (Online) 26th August Evening Shift Chemistry - Alcohols, Phenols and Ethers Question 75 English Option 4
2
JEE Main 2021 (Online) 26th August Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : Photochemical smog causes cracking of rubber.

Reason (R) : Presence of ozone, nitric oxide, acrolein, formaldehyde and peroxyacetyl nitrate in photochemical smog makes it oxidizing.

Choose the most appropriate answer from the options given below :
A
Both (A) and (R) are true but (R) is not the true explanation of (A)
B
(A) is false but (R) is true.
C
(A) is true but (R) is false.
D
Both (A) and (R) are true and (R) is the true explanation of (A)
3
JEE Main 2021 (Online) 26th August Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The interaction energy of London forces between two particles is proportional to rx, where r is the distance between the particles. The value of x is :
A
3
B
$$-$$3
C
$$-$$6
D
6
4
JEE Main 2021 (Online) 26th August Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The number of non-ionisable hydrogen atoms present in the final product obtained from the hydrolysis of PCl5 is :
A
0
B
2
C
1
D
3
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